Eponymous

Excluding directories while using pax(1)
My primary disk is failing. There are large segments that are generating low level IO errors during read or write operations. Most of the files written to the bad area were under /usr/ports/ where the FreeBSD Ports collection is installed. A few files were under the web server's root.

Figuring I'd take care of things prior to the disk actually failing to the point of it being irrecoverable, I purchased a new disk early. I installed it, partitioned it, and formatted it.

To copy the data over, ignoring the areas that were causing the IO errors, I used mv to "move" the files from the web root under /usr/ports and used the following command as root:

pax -rwvpe -s':/usr/ports/.*::gp' -X / /mnt/newdisk/

The -X prevents pax from traversing into mount points that have a different device ID than the one on which it was started. This prevents an infinitely recursive loop from happening when the new disk's mount point would have been hit. It also prevents data on the non-failing disks from being copied as well.
the -s option allows for sed search and replace scripts to be run. In this example, the : is used as the delimiter and any path matching /usr/ports/* is replaced by a null string. With this replacement all directories under /usr/ports are excluded from the copy.

[/unix] [permanent link]

Eponymous

	About My Infrequently Updated Blog. The web-based journal of M. Forde, computer nerd, endurance athlete, and DeLorean owner contact Subscribe Subscribe to a syndicated feed of my weblog, brought to you by the wonders of RSS. Flavors There's more than one way to view this weblog; try these flavors on for size. index circa 1993 Sections main musings running DeLorean code unix album TBM Archives 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 Disclaimers, Copyrights, Privacy, Etc. ToS Copyrights Links olix0r.net netmeister.org Giraffes Eat. Run. Sleep.	18 Sep 2016 Fun Conversations The DeLorean often leads to conversations one wouldn't normally expect. Case in point: today I had to call my auto insurance provider for an issue with my daily driver. After taking some info to pull up my account the conversation went something like this: Agent: Which car is this? Me: The Pontiac. Agent: Am I reading this right? Me: Reading what? Agent: I'm sorry, do you have a DeLorean? Me: Yes. Agent: I never thought I'd see someone with a policy on a DeLorean. Me: Well, you've insured both of mine... Agent: You've had two DeLoreans? Me: Yes. At that point there were a few more questions and then we got back to the issue which my phone call had been about originally. [/dmc] [permanent link]

Eponymous

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Eponymous

	About My Infrequently Updated Blog. The web-based journal of M. Forde, computer nerd, endurance athlete, and DeLorean owner contact Subscribe Subscribe to a syndicated feed of my weblog, brought to you by the wonders of RSS. Flavors There's more than one way to view this weblog; try these flavors on for size. index circa 1993 Sections main musings running DeLorean code unix album TBM Archives 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 Disclaimers, Copyrights, Privacy, Etc. ToS Copyrights Links olix0r.net netmeister.org Giraffes Eat. Run. Sleep.	21 Jun 2013 Excluding directories while using pax(1) My primary disk is failing. There are large segments that are generating low level IO errors during read or write operations. Most of the files written to the bad area were under /usr/ports/ where the FreeBSD Ports collection is installed. A few files were under the web server's root. Figuring I'd take care of things prior to the disk actually failing to the point of it being irrecoverable, I purchased a new disk early. I installed it, partitioned it, and formatted it. To copy the data over, ignoring the areas that were causing the IO errors, I used mv to "move" the files from the web root under /usr/ports and used the following command as root: pax -rwvpe -s':/usr/ports/.::gp' -X / /mnt/newdisk/ The -X prevents pax from traversing into mount points that have a different device ID than the one on which it was started. This prevents an infinitely recursive loop from happening when the new disk's mount point would have been hit. It also prevents data on the non-failing disks from being copied as well. the -s option allows for sed search and replace scripts to be run. In this example, the : is used as the delimiter and any path matching /usr/ports/ is replaced by a null string. With this replacement all directories under /usr/ports are excluded from the copy. [/unix] [permanent link]